DENTAL ROOT CANAL TREATMENT INSTRUMENT AND MANUFACTURING METHOD THEREOF
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United States of America Patent
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N/A
Issued Date -
Dec 6, 2012
app pub date -
Feb 25, 2011
filing date -
Feb 26, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Manufacturing a working portion and a joined portion through the same processing method provides a dental root canal treatment instrument allowing a simplified manufacturing process. A metal, rod-like main frame 11 includes a working portion 11a having a tapered point to be inserted in a root canal during use, and a joined portion 11b buried within a handle 12, continuing to the end on the wide side of the working portion. The working portion and the joined portion are formed through the same processing method. Injection of a synthetic resin to cover the joined portion 11b prepares the handle 12, thereby forming a dental root canal treatment instrument 10. The joined portion has at least one concave portion or convex portion in order to reinforce the joint with the handle.
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